us7037961b2 method for preparation of asphalt
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us7037961b2 method for preparation of asphalt.

US7037961B2 - Method for preparation of asphalt ...

A method for preparing an asphalt composition includes the steps of providing asphalt; mixing sulfur with the asphalt at a temperature greater than 200° C. to provide a sulfur-asphalt blend; providing a heavy aromatic oil; and mixing the heavy aromatic oil with the sulfur-asphalt blend to provide the asphalt composition. Polymers can also advantageously be incorporated into the asphalt ...

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Method for Preparation of Asphalt Composition -

A method for preparing an asphalt composition includes the steps of providing asphalt; mixing sulfur with the asphalt at a temperature greater than 200° C. to provide a sulfur-asphalt blend; providing a heavy aromatic oil; and mixing the heavy aromatic oil with the sulfur-asphalt blend to provide the asphalt composition. Polymers can also advantageously be incorporated into the asphalt ...

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Asphalt Extraction and Recovery Procedures

method. – The asphalt binder content is calculated by difference from the mass of extracted aggregate, moisture content, if determined, and mineral matter in the effluent (binder-solvent solution). – The bitumen content is expressed as a mass percent of moisture-free mixtures. ASTM D2172 Extraction Procedures • Section 8.2: “Preparation of Test Specimens” – 8.2.1 • Separate ...

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METHOD OF TEST FOR PREPARATION OF MARSHALL SPECIMENS

METHOD OF TEST FOR PREPARATION OF MARSHALL SPECIMENS 1. SCOPE 1.1 This method describes a procedure for the preparation of Marshall test specimens used in the design of bituminous mixtures, as well as specimens from field samples required for the determination of Marshall properties of dense and open-graded bituminous pavement mixtures. 2. RELEVANT DOCUMENTS 2.1 ASTM

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How to Install Asphalt: 10 Steps (with Pictures) - wikiHow

01/05/2011  8. Choose an asphalt size and thickness. The size of the aggregate used to create asphalt pavement ranges from 1/2 inch to 3/4 inch (1.27 cm to 1.9 cm). Smaller aggregate is usually used for residential driveways because it gives a smoother appearance. If the aggregate is larger, however, the pavement is stronger.

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CN108658509A - A kind of anti-rutting asphalt mixture

The invention belongs to asphalt technical fields, and in particular to a kind of anti-rutting asphalt mixture and preparation method thereof.The anti-rutting asphalt mixture, including following components in terms of mass fraction:950 parts of mineral aggregates, 48 parts of matrix pitches, 0.1~0.8 part of chlorinated paraffin, 1~10 part of tracking-resisting modifier A, 0.1~10 part of ...

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US3674242A - Preparation of asphalt paving material ...

The specification discloses a machine in which asphalt paving materials are treated by mixing and heating the materials, particularly for repair work and the like. The machine consists of an elongated drum rotatable on a horizontal axis and having fins therein for agitating the material as the drum rotates. The asphalt materials, preferably at least partially premixed with an aggregate such as ...

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METHOD OF TEST FOR PREPARATION OF HMA FOR TEST

METHOD OF TEST FOR PREPARATION OF HMA FOR TEST SPECIMENS. A. SCOPE This test method describes the procedure for determining the preparation of laboratory- mixed and field-mixed hot mix asphalt (HMA) specimens containing aggregate up to 1 in. maximum size. It also describes a procedure for the compaction of HMA by means of a California kneading compactor that imparts a

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Chapter 3 Pavement Patching and Repair

MS-17 Asphalt Overlays for Highway and Street Rehabilitation MS-19 Basic Asphalt Emulsion Manual 3-4 Communication The Washington State Legislature provides biennial appropriations conforming to a specific, (LOS) Level of Service for roadway maintenance and operations activities. The maintenance area’s roadway surface program needs to be managed to meet the LOS commitments. In doing so, it ...

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Preparation, Structure, and Properties of Modified Asphalt ...

The preparation of modified asphalt was carried out using high-speed shearing method. 600 g base asphalt was heated and melted in the iron container by using universal resistance furnace and then poured into the high-speed shearing machine at the shearing speed of 4000 rpm. WPP was rapidly added into base asphalt within 5 min at 170°C. After the above mixtures were stirred for 1.5 h at 170°C ...

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CN102174264A - Aasphalt antistripping agent for pavement ...

The invention relates to an asphalt antistripping agent of asphalt for a pavement and a preparation method thereof. The asphalt antistripping agent is prepared from the following raw materials in parts by weight: 50-65 parts of polyethylene glycol, 10-30 parts of alkoxy aliphatic polyamines, 5-15 parts of alkylamines, 5-15 parts of polyamines, 1-2 parts of alcohol ether compounds and 13-29 ...

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Summary of Hot Mix Asphalt Preparation by Marshall Method ...

In this report, a summary of hands-on experience will be presented regarding the hot mix asphalt (HMA) preparation by Marshall method: Mixing, Compaction, and Stability and Flow. Mixing Process Oven-dry a sufficient amount of different categories of aggregate (coarse and fine) at 110±5℃ until a constant mass achieved Preheating different aggregates before combination Determine the mixing ...

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(PDF) Method Statement - ASPHALTIC CONCRETE WORKS

Asphalt paver, which shall be equipped with measure, depth st ick and ruler. 9.1.18 Transverse joint shall be saw cut and car efully removed and painted with bituminous tack coat before new ...

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How to Install Asphalt: 10 Steps (with Pictures) - wikiHow

21/07/2021  8. Choose an asphalt size and thickness. The size of the aggregate used to create asphalt pavement ranges from 1/2 inch to 3/4 inch (1.27 cm to 1.9 cm). Smaller aggregate is usually used for residential driveways because it gives a smoother appearance. If the aggregate is larger, however, the pavement is stronger.

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ASTM D6925 - 15 Standard Test Method for Preparation and ...

This test method is suited for the laboratory design, field control of asphalt mix, forensics, imaging, and visualization of compacted asphalt mix. Note 1: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used.

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Construction Of Mastic Asphalt For Roads And Bridges ...

Preparation of Mastic Asphalt Mix and Transportation: Mastic Asphalt manufacture involves the following stages: The required quantity of materials for the mix will be converted to volumes with the help of a measuring can. Heating of filler alone will be done to a temperature of 170 – 200°C in a mechanically agitated mastic cooker. Half the required quantity of bitumen heated to 170 ...

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ASTM D6925 - 15 Standard Test Method for Preparation and ...

This test method is suited for the laboratory design, field control of asphalt mix, forensics, imaging, and visualization of compacted asphalt mix. Note 1: The quality of the results produced by this standard are dependent on the competence of the personnel performing the procedure and the capability, calibration, and maintenance of the equipment used.

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Test Method for Preparation of Microsurface and Slurry ...

Test Method for Preparation of Microsurface and Slurry Seal Speci-mens for Evaluation by Hot Mixed Asphalt Design Methods (Modified Marshall Test) 1.0 Scope 1.1 This method covers the preparation of slurry seal and microsurface specimens for the purpose of evaluation under various design tests employed for Hot Mixed As- phalt Concrete. 2.0 Referenced Documents 2.1 ASTM Standard D 244 ...

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Summary of Hot Mix Asphalt Preparation by Marshall Method ...

In this report, a summary of hands-on experience will be presented regarding the hot mix asphalt (HMA) preparation by Marshall method: Mixing, Compaction, and Stability and Flow. Mixing Process Oven-dry a sufficient amount of different categories of aggregate (coarse and fine) at 110±5℃ until a constant mass achieved Preheating different aggregates before combination Determine the mixing ...

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Preparation, Structure, and Properties of Modified Asphalt ...

The preparation of modified asphalt was carried out using high-speed shearing method. 600 g base asphalt was heated and melted in the iron container by using universal resistance furnace and then poured into the high-speed shearing machine at the shearing speed of 4000 rpm. WPP was rapidly added into base asphalt within 5 min at 170°C. After the above mixtures were stirred for 1.5 h at 170°C ...

Get Price

Chapter 3 Pavement Patching and Repair

MS-17 Asphalt Overlays for Highway and Street Rehabilitation MS-19 Basic Asphalt Emulsion Manual 3-4 Communication The Washington State Legislature provides biennial appropriations conforming to a specific, (LOS) Level of Service for roadway maintenance and operations activities. The maintenance area’s roadway surface program needs to be managed to meet the LOS commitments. In doing so, it ...

Get Price

(PDF) Method Statement - ASPHALTIC CONCRETE WORKS

Asphalt paver, which shall be equipped with measure, depth st ick and ruler. 9.1.18 Transverse joint shall be saw cut and car efully removed and painted with bituminous tack coat before new ...

Get Price

What is the Process of Asphalt Resurfacing? Southern ...

Asphalt typically has a service life of eight to 12 years. Factors such as traffic volume and weather determine how long it will last. With a new asphalt surface, a road looks better and is easier for motorists to use. There are several steps in the asphalt resurfacing process. Step 1: Preparation Preparation starts several weeks before the actual resurfacing takes place. If there are ramps ...

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(PDF) Chapter 11 MARSHALL METHOD OF ASPHALT-CONCRETE MIX ...

Chapter 11 MARSHALL METHOD OF ASPHALT-CONCRETE MIX DESIGN 11.1 INTRODUCTION Bituminous mixes (some times called asphalt mixes) are used in the surface layer of road and airfield pavements. The mix is composed usually of aggregate and asphalt cements. Some types of bituminous mixes are also used in base coarse. The design of asphalt paving mix, as with the design of other

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Chapter 11 MARSHALL METHOD OF ASPHALT-CONCRETE MIX

MARSHALL METHOD OF ASPHALT-CONCRETE MIX DESIGN 11.1 INTRODUCTION Bituminous mixes (some times called asphalt mixes) are used in the surface layer of road and airfield pavements. The mix is composed usually of aggregate and asphalt cements. Some types of bituminous mixes are also used in base coarse. The design of asphalt paving mix, as with the design of other engineering

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Asphalt mix design manual for South Africa

IGDHMA and therefore a need existed to update the South African design methods for asphalt mixes, particularly in the light of the following developments: The revision of the South African Pavement Design Method (SAPDM) which allows for direct

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